Enterprise Security Architect – London

Salary

£? – ? per year

Requirements

• Active SC Clearance required
• Enterprise Security Architecture experience within telecoms, mobile networks or critical national infrastructure
• Strong understanding of 4G/5G core, RAN, IMS/signalling, OSS/BSS, NFV/SDN, telecom APIs and interconnect security
• Strong AWS cloud security architecture experience
• Knowledge of Zero Trust, identity security, encryption, SIEM/SOC integration and network segmentation
• Experience with telecoms security standards and regulations, including GSMA, NCSC, ISO 27001, NIS/NIS2 and GDPR
• Strong stakeholder engagement and senior‑level communication skills

Responsibilities

• Define and maintain enterprise security architecture across telecoms and enterprise IT systems
• Develop target‑state security architectures aligned to business, regulatory and operational requirements
• Apply TOGAF, SABSA and ArchiMate across architecture artefacts and governance
• Design secure AWS, hybrid and cloud‑native architectures
• Conduct threat modelling, risk assessments and security design reviews
• Define security patterns, standards and reference architectures
• Support assurance, governance, audit and secure‑by‑design delivery
• Collaborate with engineering, operations, risk, compliance and vendor teams

Technologies

• AWS
• Architect
• ArchiMate
• Cloud
• Support
• Mobile
• Network
• OSS
• Security
• TOGAF

More

We are hiring for a long‑term Enterprise Security Architect role on a major secure telecoms programme. This is an inside IR35 contract paying £550 to £600 per day, with a hybrid working model requiring two days a week in London or Bristol. We are looking for someone to help shape secure architecture across mobile network, enterprise IT and cloud environments, covering 4G/5G core, RAN, OSS/BSS, AWS, SDN/NFV, Open RAN, edge computing and cloud migration workstreams.

last updated 25 week of 2026

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